Lubricating device for gang-drills



A. HILL.

LUBRICATING DEVICE FOR GANG -DR|LLS.

APPLICATION FILED SEPT. 13, 1917.

1,329,663. Patented Feb. 3,1920.

41 iz 14 7 L59 AARON HILL, OF LOS ,ANGELES, CALIFORNIA.

LUBRICATING DEVICE FOR GANG-'DRILLS. 7

Specification of Letters Patent.

Application filed September 13, 1917; Serial No. 191,256.

To all whom it may concern:

Be it known that I, AAnoN HILL, a citizen oi the Unlted States, residing at Los An geles, in the county of Los Angeles and State of California, have invented anew and useful Lubrlcatmg Devlcefor Gang- Drills, o'l' which. the followlng -1s a spec1hcation.

This invention relates to the feeding of lubricant to drills used upon a machine such as is shown and described in Letters Patent of the United States, No. 1,133,243 granted to me on the 23rd day of March, 1915.

In machines of this type a series of drills are movably mounted upon a suitable support so that the drills may be spaced apart according to the work to be performed and it is the main object of my invention to .pro-

vide a devicewhereby lubricant may be fed 7 to the drills dining operation of the same regardless of the relation oi the respective drills to each other. Other obgectsand advantages will appear hereinafter from the ifol lowing a description.

Referring to the drawings which are for illustrative purposes only:

Figure 1 is an elevation of a gang drill showing a lubricating device thereon embodying a form of my invention.

Fig; 2 is an enlarged side elevation partly in section of a part of one of the drill units shown in Fig- 1.

Fig. 3 is an enlarged elevation of the device shown in Fig.2.

Fig. .4 is an enlarged sectional view on line t4:, Fig. 2.

Fig. 5 is an enlarged side elevation of a drill unit provided with a modified formof my invention, part of the same being shown in section, and

Fig. 6 is a front elevation of the device shown in Fig. 5.

The gang drill .in general. consists of a frame having vertical members or posts 11, longitudinalbeams .12 and 13, the beam 13 being a horizontal. support upon which is slidably mounted a series of drill units 15L. 15 designates a vertically movable table for supporting the Work, the table being supported in any suitable manner in the frame of the machine. Each drill unit 14: is provided with a suitable drill 16 mounted therein, and each drill unit 14 is provided with a downwardly extending arm 17 provided with a boss 18 in which is mounted a hollow shaft or conductor 19, the shaft 19 being inclined at an angle and-the lowerend of' the Patented ens, 1920;,

same extending to a pointadjacent'to the drill 16.

20 deslgnates a hub or sleevelmounted .on

the shaft 19, provided with a circular flange or plate 21 secured to theinnerend. of the. i

same, such plate 21 abutting against the boss 18 and forming a splash guard. Arranged on the outside of the plate 21 is a seriesof elevators 22 each consistingof a curved pipe,

the outer end of which iscut off as indicated at 23 on a line radial to the center ofthe' shaft 19. The inner endof each elevator eX- tends into the hub 20 connecting. with an opening or duct 24; which extends to the shaft 19. The shaft 19 is providedwith an the ducts 24; so that any liquid in the elevators in. proper position will be fed .from the opening or passage 25 in alinement with chain27, the sprocket chain 27 being secured at its ends to quadrants 30 and 31 pivotally mounted at32 and 33to the uprights 11 of the machine. A reciprocating movement is given the chain 27 by an arm 35 .pivotally connected to an extension 36 on the quadrant. 7'

31, the arm 35 being connected to a crank 37 on a shaft 38 driven by means of a beveled gear 39 from a similar gear 40 secured to a pulley 41 which is drivenirom any Slllt-. able power source not shown. 42 designates a coiled spring mounted on a bracket43 and secured to the quadrant. 30 for placing an elastic tension on the chain 27.

The operation or" theformof device shown in Figs. 1 to 4 inclusive is as follows:

The drill units being spaced upon the beam 13 in the desired position and being secured thereon in any suitable manner, the

machine is started and through the 00111160 tions heretofore described, the chain 27 is reciprocated back and forth by the action of the quadrants 30 and 31. The elevators on in the shaft where it is delivered through the shaft to its associated drill.

It is to be noted that the elevators on the adjacent drills are staggered as indicated in Figs. 2 and 3 so that the elevators on adj acent drills may pass each other to a certain extent thereby permitting a closer adjustment of the drills than would otherwise be the case.

In the form of device shown in Figs. 5 and 6, the arm 17 on the drill unit let is provided with a hollow shaft 50, the outer end of which is provided with a pin 51 upon which is movably mounted an elevator 52, the elevator 52 consisting of a trough 53, the outer end 54 of which extends into the liquid 55 in a pan 56 and the inner end of which is bent downwardly as indicated at 57 and terminates over an opening 58 formed in the top of the shaft 50. 6O designates an arm extending downwardly from the elevator 52' into the path of a series of earns 63 formed on the side of a sprocket wheel 6%, the sprocket wheel being driven by a sprocket chain 65 in the same manner as heretofore described with respect to the chain 27 illustrated in Figs. 1 to a inclusive.

The operation of the device shown in Figs. 5 and 6-is as follows:

The sprocket chain being reciprocated causes the arm 60 on the elevator to be swung forwardly and rearwardly due. to riding over the cams 63 on the sprocket wheel, such forward movement raising the outer end of the elevator as indicated in dotted lines in Fig. 5 so that the liquid caught therein runs down and rearwardly on the elevator and is delivered through the opening 58 into the shaft 50, running through the shaft 50 and 7 being delivered on the drill 16.

WVhat I claim is:

1. A lubricating device for gang drills of the type in which the drills are independently movable comprising a conductor for each drill, an elevator for each conductor, and a lubricator container common to all of said elevators and within which the sev eral elevators are movable as the drills are positioned variably with relation to each other.

2. A lubricating device for gang drills comprising a conductor for each drill, a rotatable elevator for each conductor, a lubricator container common to all of said elevators, and an operating means for said elevators common to all of the elevators, said operating means consisting of a driven member on each elevator and a driving member common to all of said driven members.

3. A lubricating device for gang drills comprising a conductor for each drill, an elevator for each conductor, the respective elevators being arranged in staggered relation to each other, and a lubricator container common to all of said elevators, each drill, conductor and elevator constituting a unit, said units being movable independently for relative adjustment along the container, and an operating means for said elevators common to all of the elevators.

4-. A lubricating device for gang drills comprising a conductor for each drill, a rotatable elevator for each conductor, a lubricator container common to all of said elevators, and an operating means for said elevators common to all of the elevators, said operating means comprising a sprocket wheel in fixed relation to each elevator and a driven chain engaging said sprocket wheels.

5. In combination support, a series of drill units movably mounted on the support, a conductor for each drill unit, an elevator for each conductor, said elevators being arranged in staggered relation to each other,

a lubricator container common to all of said elevators and in which the elevators are movable, and operating means for said elevators common to all of said elevators.

6. In combination, a support, a series of drill units movably mounted on said support, a hollow shaft fixed in each unit hav- Y and communicating through openings in said sleeve with the opening in the shaft, a sprocket wheel on each sleeve, a chain engaging the sprocket wheels and means for reciprocating said chain to operate the sprocket wheels. 7

In testimony whereof I have hereunto set my hand at Los Angeles, California, this 7th day of September, 1917.

AARON HILL. 

